## project.rb
class Project < ActiveRecord::Base
  def self.search(string)
    gem = GEMS.search(/^#{string}$/).sort{|g1, g2| g1.version.version <=> g2.version.version}.last
    new(:name => gem.name, :version => gem.version.version, :homepage => gem.homepage, :long_name => gem.full_name) if gem
  end
end

## projects controller
  def show
    @project = Project.search(params[:id])

    respond_to do |format|
      format.html # show.rhtml
      format.js { render "projects/show_js" }
      format.xml  { render :xml => @project.to_xml }
    end
  end

## show_js.rhtml
<%= params[:callback] || "" %><%= params[:variable] + " = " if params[:variable]%>({
	"name":       "<%= @project.name %>",
	"long_name": 	"<%= @project.long_name %>",
	"homepage": 	"<%= @project.homepage %>"
})


## envrionment.rb
GEMS = YAML::load_file("#{RAILS_ROOT}/config/yaml")